Taro Aso, Japan's deputy prime minister and finance minister, attends an International Monetary Fund (IMF) governors group photograph during the IMF and World Bank Group Spring Meetings in Washington, D.C., U.S., on Saturday, April 20, 2013. The IMF's Managing Director said the euro area has the only central bank with enough leeway to take more measures to boost growth as low interest rates fail to trickle down to the region's economy. Photographer: Andrew Harrer/Bloomberg via Getty Images